PIPE-JACKING APPARATUS

• Main Authors: HAYASHI NOBORU, NAGAOKA TAKASHI, SHIMIZU NOBUAKI, TAKAMURA KEIICHI, KAMIO MASAHIRO, KASUYA TETSUYUKI, SAITO MASAHARU, YAMAMOTO YOSHIHISA, ICHIMURA YASUO, KATO MAKOTO, HAGIWARA HIDEO, KODAIRA SADATADA, BANDO EIGO, TSURUTA KOICHI, KASUYA TARO, TAKEUCHI TAKU, SAITO HIROSHI, MURAKAMI YOSHIHIKO, YOSHIKAWA TADASHI
• Format: Patent
• Language: English
• Published: 16.06.2005
• Edition: 7
• Subjects: BLASTING; EARTH DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GALLERIES; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LARGE UNDERGROUND CHAMBERS; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MINING; PIPES; SHAFTS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TUNNELS; WEAPONS

PROBLEM TO BE SOLVED: To provide a pipe-jacking apparatus which can push a buried pipe in a stable state in a pipe-jacking direction, even if curved pipe-jacking is performed by a high thrust. SOLUTION: This pipe-jacking apparatus, which is equipped with a pushing board 2 abutting on a rear surface 1a of the buried pipe 1 and a jack 3 for pushing the pushing board 2, pushes the buried pipe 1 by the pushing board 2 so as to lay the buried pipe 1. The pipe-jacking apparatus is provided with a joint mechanism S which is composed of a trunnion shaft 34 and a retaining member 21 for retaining the trunnion shaft 34. When the pushing board 2 is pushed so that the buried pipe 1 can be jacked, the pipe-jacking apparatus follows a change in relative positions of the pushing board 2 and the jack 3. COPYRIGHT: (C)2005,JPO&NCIPI